surflog

Robin Elahi
August 7, 2017

1

2

  • The need

3

  • User inputs
  • Ocean conditions
  • surflog outputs
    1. Visualize your sessions
    2. Predict your next session

4 - Visualize your sessions

5 - Visualize your sessions

6 - Predicting the number of rides



Generalized linear model with four predictors

  • Swell height, period and direction
  • Tidal height


    \[ Rides_{i} = Poisson(\mu_{i}) \]
    \[ E(Rides_{i}) = var(Rides_{i}) = \mu_{i} \]
    \[ log(\mu_{i}) = \alpha + \beta_{h}Height_{i} + \beta_{p}Period_{i} ~+ \] \[ \beta_{d}Direction_{i} + \beta_{t}Tide_{i} \]

The money plot

Observed vs predicted